diff options
| author | Matthew Wilcox (Oracle) <willy@infradead.org> | 2024-08-21 18:39:10 +0100 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2024-09-03 21:15:42 -0700 |
| commit | e880034cf7182aa35962bd30dfc9fa60476d56a4 (patch) | |
| tree | 55148be6aa56f0c4bf523dc7c6df26135454499c /fs | |
| parent | e27ad6560e4b5993315b56d6884ca5a4652468f4 (diff) | |
mm: introduce page_mapcount_is_type()
Resolve the awkward "and add one to this opaque constant" test into a
self-documenting inline function.
Link: https://lkml.kernel.org/r/20240821173914.2270383-3-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Acked-by: David Hildenbrand <david@redhat.com>
Cc: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Cc: Kent Overstreet <kent.overstreet@linux.dev>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/proc/internal.h | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/fs/proc/internal.h b/fs/proc/internal.h index a8a8576d8592..cc520168f8b6 100644 --- a/fs/proc/internal.h +++ b/fs/proc/internal.h @@ -166,8 +166,7 @@ static inline int folio_precise_page_mapcount(struct folio *folio, { int mapcount = atomic_read(&page->_mapcount) + 1; - /* Handle page_has_type() pages */ - if (mapcount < PAGE_MAPCOUNT_RESERVE + 1) + if (page_mapcount_is_type(mapcount)) mapcount = 0; if (folio_test_large(folio)) mapcount += folio_entire_mapcount(folio); |